THE EXPERIMENTAL INVESTIGATION OF MECHANICAL AND MORPHOLOGICAL PROPERTIES OF POLYSTYRENE.

Document Type : Research Paper

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Abstract

Microcellular foams are a group of foams which have a lot of micro cells in the size of about 10 microns. In these foams, neutral gases (Nitrogen or Carbon dioxide) are used as a foaming material. Because of their small sizes, these foams have better mechanical and physical properties (such as fatigue strength, yield strength and de-electrical and thermal properties) than non-foamed plastics. In this study, the mechanical properties of polystyrene microcellular foams have been studied. The rate of relative density, the size of the cells, the structure of the foams and yield and fatigue strength have been studied and measured. To achieve an optimal structure, the results show that temperature and time of foaming should be controlled carefully. This condition is in the temperature of about 100° c and the time of 100 second. Also, the tensile strength of the foamed sample has been reduced and the rate of energy absorption has been significantly increased.

Keywords

References

 
[1] Martini, J.E., The production and Analysis of Microcellular Form, Ph.D. thesis in Mechanical Engineering,                 MIT, January 1981.
[2]  Park, C.B., Baldwin, D.F. and Suh, N.P., SME, Cellular and Microcellular Materials, MD-Vol. 53, PP. 109-                124, 1994.
[3] Kumar, V. and Suh,N.P., SPE ANTEC Tech. Papers, Vol.39,pp.715-718,1993.
[4]  Cole, T.J., Manufacturability of  Microcellular Foamed Plastics, Ph.D. thesis in Mechanical Engineering,                   MIT, Juan 1991.
[5]  Hyde, L.J., Kishbaugh, L.A. (Trexel Inc.), Katterman, J.A. (Delphi Automotive Systens Corp.), SAE 2002             World Congress Detroit, Michigan, Martini 2002.
[6]  Martini, J.E., waldman, F.A. and Suh, N.P., AnTEC 82,28674.
[7] Colton, J.S. and Suh,N.P., Pplym. Eng. And Sci., Mid-Apr., Vol 27,NO.7,pp. 485-499,1987.
[8]  Park, C.B., Behravesh, A.H., Jaani, S. and Venter, R.D., Recent Advances in Polymeric Foam, Chapter 8,                 Khemani, K., ed., ACS, Washington, pp. 115-129(1996).
[9]  Behravesh, A.H., Park, C.B., and Venter R.D., “Challenge to Production of low-Density, Fine cell HDPE                 Foams using CO2,” Cellular Polymers. Vol.17,NO.5,pp.309-326(1998).
[10]  Kumar, V., Nedella, K.V., Handbook of Polymer Foams , Chapter 11, RAPRA Technology, UK 2004.
[11]  Crank, J. and Park, G.S., Diffusion in Polymers Academic Press Inc., Newyork.N.Y, 1968.
[12]  Van krevelen, D.w., Properties of Polymers, Elsevier Scientific Publishers Company, 1990.
[13]  Hwang, Y.D., cha, S.W., polymer testing 21,pp269-275,2002.
[14]  Matuana, L., park, C.B., Balatinecz, j.j., polymer Eng.  And Science, july 1997,vol.37,no. 7 , pp1137-1147
[15]  Kumar, V., Weller,  j., Murray, R., Microcellular foams, ANTEC 95,pp2202-2207
 
 
 
Journal of Modeling in Engineering
Volume 15, Issue 51
October 2017
Pages 267-274

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History

  • Receive Date: 07 February 2016
  • Revise Date: 19 February 2016
  • Accept Date: 24 February 2016

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